Jonah Williams f20471d081 Revert "reland add lifecycle enum and fix the scheduleforcedframe (#45133)" (#45260)
This reverts commit 99324105da695ed55d322a039cf5349a7b2ab45b.

It was implicated in https://github.com/flutter/flutter/issues/45258
2019-11-20 09:43:15 -08:00
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